Bài 2. Điền cụm từ với “for”, “since” hoặc “ago”.
1. The phone last rang at four o’clock. ~ So you’ve had no calls …………... ..? 
2. I haven’t been to the dentist for ten years. ~ You last went to the dentist…………......? 
3. I last saw Rita on Sunday. ~ Haven’t you seen her ...................? 
4. We’ve had six weeks without rain. ~ Yes, it hasn’t rained.................. 
5. It’s three years since Lisa got married. ~ Really? Has she been married………………?
6. It’s eight months since my sister had any work. ~ He lost his job......?
7. Mrs. Brown was taken ill three weeks ago. ~ You mean she’s been ill…………………, and nobody’s told me!
8. I got here an hour ago. ~ What! You mean you’ve been waiting  …………… an hour? 
9. I have not seen him……………. he was 16.
10. I've known him   ……………. ages.